Galactic Radiation and Background

From Spacefaring




Galactic Radiation and Background (GRAB) was the first successful United States orbital surveillance program, comprising a series of five Naval Research Laboratory electronic surveillance and solar astronomy satellites, launched from 1960 to 1962. Though only two of the five satellites made it into orbit, they returned a wealth of information on Soviet air defense radar capabilities as well as useful astronomical observations of the Sun.

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GRAB satellite - National Cryptologic Museum - DSC07969GRAB satellite - National Cryptologic Museum - DSC07969
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    commonsimageJuBlagajTekija1 Commons
    commonsimageGRAB satellite - National Cryptologic Museum - DSC07969 Commons